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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.example.android.supportv4.app;
     18 
     19 import android.content.Context;
     20 import android.content.res.TypedArray;
     21 import android.os.Bundle;
     22 import android.support.v4.app.Fragment;
     23 import android.support.v4.app.FragmentActivity;
     24 import android.support.v4.app.FragmentTransaction;
     25 import android.support.v4.content.ContextCompat;
     26 import android.support.v4.view.ViewCompat;
     27 import android.util.AttributeSet;
     28 import android.view.LayoutInflater;
     29 import android.view.View;
     30 import android.view.ViewGroup;
     31 import android.widget.TextView;
     32 
     33 import com.example.android.supportv4.R;
     34 
     35 /**
     36  * Demonstrates a fragment that can be configured through both Bundle arguments
     37  * and layout attributes.
     38  */
     39 public class FragmentArgumentsSupport extends FragmentActivity {
     40 //BEGIN_INCLUDE(create)
     41     @Override protected void onCreate(Bundle savedInstanceState) {
     42         super.onCreate(savedInstanceState);
     43         setContentView(R.layout.fragment_arguments_support);
     44 
     45         if (savedInstanceState == null) {
     46             // First-time init; create fragment to embed in activity.
     47             FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
     48             Fragment newFragment = MyFragment.newInstance("From Arguments");
     49             ft.add(R.id.created, newFragment);
     50             ft.commit();
     51         }
     52     }
     53 //END_INCLUDE(create)
     54 
     55 //BEGIN_INCLUDE(fragment)
     56     public static class MyFragment extends Fragment {
     57         CharSequence mLabel;
     58 
     59         /**
     60          * Create a new instance of MyFragment that will be initialized
     61          * with the given arguments.
     62          */
     63         static MyFragment newInstance(CharSequence label) {
     64             MyFragment f = new MyFragment();
     65             Bundle b = new Bundle();
     66             b.putCharSequence("label", label);
     67             f.setArguments(b);
     68             return f;
     69         }
     70 
     71         /**
     72          * Parse attributes during inflation from a view hierarchy into the
     73          * arguments we handle.
     74          */
     75         @Override
     76         public void onInflate(Context context, AttributeSet attrs, Bundle savedInstanceState) {
     77             super.onInflate(context, attrs, savedInstanceState);
     78 
     79             TypedArray a = context.obtainStyledAttributes(attrs,
     80                     R.styleable.FragmentArguments);
     81             mLabel = a.getText(R.styleable.FragmentArguments_android_label);
     82             a.recycle();
     83         }
     84 
     85         /**
     86          * During creation, if arguments have been supplied to the fragment
     87          * then parse those out.
     88          */
     89         @Override
     90         public void onCreate(Bundle savedInstanceState) {
     91             super.onCreate(savedInstanceState);
     92 
     93             Bundle args = getArguments();
     94             if (args != null) {
     95                 CharSequence label = args.getCharSequence("label");
     96                 if (label != null) {
     97                     mLabel = label;
     98                 }
     99             }
    100         }
    101 
    102         /**
    103          * Create the view for this fragment, using the arguments given to it.
    104          */
    105         @Override
    106         public View onCreateView(LayoutInflater inflater, ViewGroup container,
    107                 Bundle savedInstanceState) {
    108             View v = inflater.inflate(R.layout.hello_world, container, false);
    109             View tv = v.findViewById(R.id.text);
    110             ((TextView)tv).setText(mLabel != null ? mLabel : "(no label)");
    111             ViewCompat.setBackground(
    112                     tv, ContextCompat.getDrawable(getContext(), android.R.drawable.gallery_thumb));
    113             return v;
    114         }
    115     }
    116 //END_INCLUDE(fragment)
    117 }
    118